<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片区域 -->
    <el-card>
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input
            placeholder="请输入内容"
            v-model="queryInfo.query"
            clearable
            @clear="getGoodsList"
          >
            <el-button
              slot="append"
              icon="el-icon-search"
              @click="getGoodsList"
            ></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="goAddpage">添加商品</el-button>
        </el-col>
      </el-row>
      <!-- table表格区域 -->
      <el-table :data="goodslist" border stripe>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="商品名称" prop="goods_name"></el-table-column>
        <el-table-column
          label="商品价格(元)"
          prop="goods_price"
          width="95px"
        ></el-table-column>
        <el-table-column
          label="商品重量"
          prop="goods_weight"
          width="70px"
        ></el-table-column>
        <el-table-column label="创建时间" prop="add_time" width="140px">
          <template slot-scope="scope">
            {{ scope.row.add_time | dateFormat }}
          </template>
        </el-table-column>
        <el-table-column label="操作" width="130px">
          <template slot-scope="scope">
            <el-tooltip effect="dark" content="查看详情或编辑" placement="top">
              <el-button
                type="primary"
                icon="el-icon-edit"
                size="mini"
                @click="editGoodsById(scope.row.goods_id)"
              ></el-button>
            </el-tooltip>
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="mini"
              @click="removeById(scope.row.goods_id)"
            ></el-button>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[10, 20, 30, 40]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
        background
      >
      </el-pagination>
    </el-card>

    <!-- 点击编辑商品编辑 -->
    <el-dialog title="编辑商品" :visible.sync="editGoodsDialogVisible" width="50%">
      <el-form
        :model="editGoodsForm"
        :rules="editGoodsFormRules"
        ref="editGoodsFormRef"
        label-width="100px"
      >
        <el-form-item label="商品名称" prop="goods_name">
          <el-input
            type="textarea"
            v-model="editGoodsForm.goods_name"
          ></el-input>
        </el-form-item>
        <el-form-item label="商品价格" prop="goods_price">
          <el-input
            v-model="editGoodsForm.goods_price"
            type="number"
          ></el-input>
        </el-form-item>
        <el-form-item label="商品数量" prop="goods_number">
          <el-input
            v-model="editGoodsForm.goods_number"
            type="number"
          ></el-input>
        </el-form-item>
        <el-form-item label="商品重量" prop="goods_weight">
          <el-input
            v-model="editGoodsForm.goods_weight"
            type="number"
          ></el-input>
        </el-form-item>
        <el-form-item label="商品图片">
          <img
            :src="item.pics_sma_url"
            alt=""
            v-for="item in editGoodsForm.pics"
            :key="item.id"
            class="goodsImg"
          />
        </el-form-item>
        <el-form-item label="商品介绍">
          <span v-html="editGoodsForm.goods_introduce"></span>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editGoodsDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editGoodsHandle">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    return {
      // 查询参数对象
      queryInfo: {
        query: "",
        pagenum: 1,
        pagesize: 10
      },
      // 商品列表
      goodslist: [],
      // 商品总数
      total: 0,
      // 控制编辑模态框的显示与隐藏
      editGoodsDialogVisible: false,
      // 需要编辑或查看的商品数据
      editGoodsForm: {},
      editGoodsFormRules: {
        goods_name: [
          { required: true, message: "请输入商品名称", trigger: "blur" }
        ],
        goods_price: [
          { required: true, message: "请输入商品价格", trigger: "blur" }
        ],
        goods_number: [
          { required: true, message: "请输入商品数量", trigger: "blur" }
        ],
        goods_weight: [
          { required: true, message: "请输入商品重量", trigger: "blur" }
        ]
      }
    };
  },
  created() {
    this.getGoodsList();
  },
  methods: {
    // 根据分页获取对应的商品列表
    async getGoodsList() {
      const { data: res } = await this.$http.get("goods", {
        params: this.queryInfo
      });
      if (res.meta.status !== 200) {
        return this.$message.error("获取数据失败!");
      }
      this.goodslist = res.data.goods;
      this.total = res.data.total;
    },
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize;
      this.getGoodsList();
    },
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage;
      this.getGoodsList();
    },
    // 点击删除按钮
    async removeById(id) {
      const confirmResult = await this.$confirm(
        "此操作将永久删除该商品, 是否继续?",
        "提示",
        {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning"
        }
      ).catch(err => err);
      if (confirmResult !== "confirm") {
        return this.$message.info("已取消删除操作");
      }
      const { data: res } = await this.$http.delete(`goods/${id}`);
      if (res.meta.status !== 200) {
        return this.$message.error("删除商品失败!");
      }
      this.$message.success("删除商品成功!");
      this.getGoodsList();
    },
    // 点击添加商品跳转到添加商品页面  通过路由跳转
    goAddpage() {
      this.$router.push("/goods/add");
    },
    async editGoodsById(id) {
      this.editGoodsDialogVisible = true;
      const { data: res } = await this.$http.get(`goods/${id}`);
      if (res.meta.status !== 200) {
        return this.$message.error("获取商品信息失败!");
      }
      // console.log(res);
      this.editGoodsForm = res.data;
      console.log(this.editGoodsForm);
    },
    // 点击编辑确定按钮
    editGoodsHandle() {
      // 首先对表单进行预校验  前4项为可修改项 且为必填项
      this.$refs.editGoodsFormRef.validate(async valid => {
        if (!valid) {
          return this.$message.error("请填写必要的表单项!");
        }
        console.log(this.editGoodsForm.goods_id);
        const { data: res } = await this.$http.put(
          `goods/${this.editGoodsForm.goods_id}`,
          this.editGoodsForm
        );
        if (res.meta.status !== 200) {
          return this.$message.error("修改商品失败!");
        }
        this.$message.success("修改成功!");
        this.getGoodsList();
        this.editGoodsDialogVisible = false;
      });
    }
  }
};
</script>

<style lang="less" scoped>
.goodsImg {
  width: 80px;
  height: 80px;
  margin-right: 3px;
}
</style>
